Mudslinging between the two main rivals in Iran’s forthcoming presidential election has reached new levels as the campaign enters its final day.The hard-fought election pits former prime minister Mir Hossein Mousavi against current President Mahmoud Ahmadinejad. He ended his re-election campaign with a bitter swipe at his rivals, brushing their accusations aside. In a 20 minute TV appearance Ahmadinejad defended himself as a servant of the people, calling his opponents liars. While the address was being aired, hundreds of Mousavi supporters gathered outside Iran’s state broadcaster, which has been the scene of nightly rallies, accusing the channel of bias. This Mousavi supporter said: ‘‘It will have a negative effect on Ahmadinejad’s votes. A person is good or qualified when a organisation is supporting a particular person. People have seen, heard and felt the lies.’‘ Mousavi spent his last day campaigning in the capital Tehran. He accuses Ahmadinejad of messing up the economy and plunging Iran into international isolation. A truth one Mousavi supporter says the current President cannot hide from. ‘‘This is a world of communications. It’s no longer possible to conceal the truth. Tools such as Facebook and text messaging convey information much faster.’‘ A tight result is expected on Friday and if there is no clear winner the vote will go to a second round.